River Monsters: Inside the Hidden World of the Amazon Piranha

Piranhas are not the relentless, man-eating monsters portrayed by Hollywood; they are generally timid, opportunistic scavengers that pose very little threat to healthy humans. While they possess razor-sharp teeth and an exceptionally strong bite relative to their size, there has never been a verified, official record of a healthy human being targeted and killed by a school of piranhas in open water. The Origin of the Myth

Much of the piranha’s terrifying reputation traces back to former U.S. President Teddy Roosevelt. In his 1914 book, Through the Brazilian Wilderness, Roosevelt described them as the “most ferocious fish in the world” after witnessing a shoal rapidly strip a cow to its skeleton.

However, locals had intentionally staged this spectacle for his visit. They blocked off a section of the river, packed it with hundreds of red-bellied piranhas, and starved them for days. When the cow was introduced, the starving fish entered an unnatural, hyper-aggressive feeding frenzy. Hollywood later capitalized on this embellished event to create decades of sensationalized horror tropes. Piranhas South America’s Most Misunderstood Fish